Electrical discharge behavior of micro-gaps

Asokan, T.; Balachandra, T. C.

doi:10.1109/tdei.2011.6118624

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…The dependence of E-field ratio (ratio of Electric field calculated based on FEM model to the actual field applied) with gap distance is studied in FEM (Ansys 12.1 version). The field analysis gives an idea of the variation Efield ratio with respect to the gap distance as also reported for blade electrodes in [6]. Coincidentally the E-field ratio becomes unity for a particular gap spacing for a given electrode configuration.…”

Section: Electric Field Modellingmentioning

confidence: 52%

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Breakdown behaviour of sub-millimetre air gaps under alternating voltage

Shreedevi

Balachandra

2013

2013 IEEE 1st International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)

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Experimental results leading to breakdown voltage (BDV) measurements conducted with blade-blade, hemispherehemisphere and needle-plane electrode configuration in air at STP have been reported in this paper. The applied voltage was 50Hz AC, the electrode material effect on the BDV's was studied in the needle-plane configuration by changing the plane electrode material. Electric field plots for various electrode configurations have been obtained by FEM software package. The results indicate that the overall breakdown strength of the gap in the 100µm to 1000µm gap range shows a marginal increase up to 400 µm and increases as we approach 100 µm irrespective of the geometry. The variations in the spread as we approach lower limit of 100µm is attributed to the electrode configuration and/or electrode material. Further work is in progress to study the prebreakdown behavior. The results are expected to impact MEMS technology.

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Section: Electric Field Modellingmentioning

confidence: 52%

“…Since this was limited, the field contour appears to be rough. The suitability of FEM for field calculations for similar geometries is in [6].Needle tip radius is 200µm, material is stainless steel chrome plated. Fresh needles were used and the needle-tip radius was controlled-conditioned.…”

Section: ) Hemispherical Electrode Configurationmentioning

confidence: 99%

Breakdown behaviour of sub-millimetre air gaps under alternating voltage

Shreedevi

Balachandra

2013

2013 IEEE 1st International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)

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“…They found the breakdown field strength of the micro-gap is much stronger than that of the macro-gap, and the breakdown field strength of the series structure is significantly stronger than that of the parallel structure. 20) Strong et al concluded that the Townsend avalanche process is not suitable for the electrode gaps less than 5 μm by studying the breakdown of multi-gap MEMS structure. 21) Sun et al used a scanning probe microscope to analyze the discharge process of the needle-plate electrodes under micro-gap at atmospheric pressure.…”

Section: Introductionmentioning

confidence: 99%

Analysis of gas discharge characteristics across micro-gap under different pressures

Li¹,

Sun²,

Sun³

et al. 2021

Jpn. J. Appl. Phys.

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To study the process of micro-gap gas discharge under different pressures, the experimental of the micro-discharges for the gaps ranging from 1 to 100 μm under 1-100 kPa is presented and the results are discussed. The curves of breakdown voltage with the pd value at different gaps are drawn and there are multiple breakdown voltages under the same pd value. As the decrease of the gaps, the deviation between the breakdown curve and the traditional Paschen curve increases when the electrode distance is less than 100 μm and the pd value is less than about 80 Pa•cm. The breakdown field strength and the ratio of effective secondary coefficient of field emission to Townsend's secondary coefficient are estimated at different pressures and different electrode gaps. The ion-enhanced field effect has been found to play an important role in field emission in several microns of electrode gaps.

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